func PEM2PrivKey(s string) crypto.PrivateKey {
p, _ := pem.Decode([]byte(s))
if p == nil {
panic("no PEM block found in " + s)
}
// Try various different private key formats one after another.
if rsaPrivKey, err := x509.ParsePKCS1PrivateKey(p.Bytes); err == nil {
return *rsaPrivKey
}
if pkcs8Key, err := x509.ParsePKCS8PrivateKey(p.Bytes); err == nil {
if reflect.TypeOf(pkcs8Key).Kind() == reflect.Ptr {
pkcs8Key = reflect.ValueOf(pkcs8Key).Elem().Interface()
}
return pkcs8Key
}
return nil
}
func main() {
block, _ := pem.Decode([]byte(pemPrivateKey))
rsaPriv, err := x509.ParsePKCS1PrivateKey(block.Bytes)
if err != nil {
panic("Failed to parse private key: " + err.Error())
}
template := x509.Certificate{
SerialNumber: big.NewInt(1),
Subject: pkix.Name{
CommonName: "test",
Organization: []string{"Σ Acme Co"},
},
NotBefore: time.Unix(1000, 0),
NotAfter: time.Unix(100000, 0),
KeyUsage: x509.KeyUsageCertSign,
}
if _, err = x509.CreateCertificate(rand.Reader, &template, &template, &rsaPriv.PublicKey, rsaPriv); err != nil {
panic("failed to create certificate with basic imports: " + err.Error())
}
}